linux-toradex.git/drivers/char/virtio_console.c, branch v2.6.27.12 Linux kernel for Apalis and Colibri modules virtio_console: use virtqueue notification for hvc_console 2008-07-25T02:06:06+00:00 Christian Borntraeger borntraeger@de.ibm.com 2008-06-20T13:24:15+00:00 91fcad19d03ed67cb50fd0e1913a8b89cc3ed3ec This patch exploits the new notifier callbacks of the hvc_console. We can use the virtio callbacks instead of the polling code. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 
This patch exploits the new notifier callbacks of the hvc_console. We can
use the virtio callbacks instead of the polling code.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
virtio: simplify config mechanism. 2008-02-04T12:49:57+00:00 Rusty Russell rusty@rustcorp.com.au 2008-02-05T04:49:56+00:00 a586d4f6016f7139d8c26df0e6927131168d3b5b Previously we used a type/len pair within the config space, but this seems overkill. We now simply define a structure which represents the layout in the config space: the config space can now only be extended at the end. The main driver-visible changes: 1) We indicate what fields are present with an explicit feature bit. 2) Virtqueues are explicitly numbered, and not in the config space. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 
Previously we used a type/len pair within the config space, but this
seems overkill.  We now simply define a structure which represents the
layout in the config space: the config space can now only be extended
at the end.

The main driver-visible changes:
1) We indicate what fields are present with an explicit feature bit.
2) Virtqueues are explicitly numbered, and not in the config space.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
virtio/virtcons: fix section mismatch warning 2007-11-05T23:12:32+00:00 Randy Dunlap randy.dunlap@oracle.com 2007-11-05T22:51:01+00:00 139b82984af5a98e4b03fd01616d79fc4970128a Make virtcons_probe() __devinit. Fixes this section warning: WARNING: vmlinux.o(.text+0x14c10b): Section mismatch: reference to .init.text:hvc_alloc (between 'virtcons_probe' and 'ac_register_board') Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Make virtcons_probe() __devinit.
Fixes this section warning:

WARNING: vmlinux.o(.text+0x14c10b): Section mismatch: reference to .init.text:hvc_alloc (between 'virtcons_probe' and 'ac_register_board')

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Virtio console driver 2007-10-23T05:49:55+00:00 Rusty Russell rusty@rustcorp.com.au 2007-10-22T01:03:39+00:00 31610434bc3523c0b01a10917a1185096a03c4c8 This is an hvc-based virtio console driver. It's suboptimal becuase hvc expects to have raw access to interrupts and virtio doesn't assume that, so it currently polls. There are two solutions: expose hvc's "kick" interface, or wean off hvc. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 
This is an hvc-based virtio console driver.  It's suboptimal becuase
hvc expects to have raw access to interrupts and virtio doesn't assume
that, so it currently polls.

There are two solutions: expose hvc's "kick" interface, or wean off hvc.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>